在硝胺填料HMX表面的乳液聚合-包覆

研究硝胺晶体填料ＨＭＸ的包覆。根据ＸＰＳ测定的包覆度数据,选择三羟甲基丙烷作为制备端羟基聚氨酯（ＰＵ）预聚合的三元醇,使设计的交联覆层具有抗溶解和抗剪切能力,并采用端羟基ＰＵ预聚物与异佛尔酮二异氰酸酯的乳液聚合反应,对硝胺晶体填料ＨＭＸ进行包覆。经过对比,得出合适的乳液聚合－包覆工艺条件。将包覆的ＨＭＸ用于制备含能复合材料,材料的拉伸强度提高了２１．３％,在硝胺ＨＭＸ晶体表面形成的交联包覆层起到了     

部分取代苯定量结构-生物降解相关性(QSBR)研究

采用Ｃｈｅｍｓ３Ｄ中量子化学ＭＯＰＡＣ－ＡＭ１法计算了７种间苯胺类和８地苯酚的分子量高占有轨道能ＥＨＯＭＯ、分子最低空轨道能ＥＬＵＭＯ。用ＱＳＡＲ程序软件包查得分子体积Ｖｍ。结合分子连接性指数（＾３Ｘ,＾３Ｘ＾ｖ）对生物降解二级速率常数对数ｌｇＫｂ进行定量结构－生物降解相关性（ＱＳＢＲ）分析,通过回归分析,得到如下两个回归方程：ｌｇＫｂ＝－０．８３２－０．１１８Ｖｍ＋１．７４８＾３Ｘ＾ｖ,ｎ＝１５,Ｒ＾２＝０．８３２,ＳＥ＝０．５７７,Ｆ＝２９．７,ｐ＝０．０００。（１）ｌｇＫｂ＝０．１２４Ｖｍ＋１．７４９＾３Ｘ＾ｖ,ｎ＝１５,Ｒ＾２＝０．９９８,ＳＥ＝０．５５９１,Ｆ＝４１４８．９９,ｐ＝０．０００．（２）     

麻风病人血液超氧化物歧化酶和谷胱甘肽过氧化物酶活性测定分析

人体内的超氧化物歧化酶（ＳＯＤ）和谷胱甘肽过氧化物酶（ＧＳＨ－ＰＸ）．是清除和ＯＨ、ＲＯＯＨ等自由基的主要酶．通过测定正常人、麻风病人的血液ＳＯＤ、ＧＳＨ－ＰＸ活性．探讨麻风病人血液ＳＯＤ、ＧＳＨ－ＰＸ变化对自由基清除的影响．结果显示：麻风病人体内的ＳＯＤ和ＧＳＨ－ＰＸ活性显著低于正常人（Ｐ＜０．０１）；而现症和治愈、多菌型和少菌型、活动期和消退期病人之间无显著性差异（Ｐ＞０．０５）．提示ＳＯＤ和ＧＳＨ－ＰＸ活性降低与麻风杆菌感染有关．且感染麻风菌后病人治愈前后血液中的ＳＯＤ和ＧＳＨ－ＰＸ活性没有明显变化．     

氢氧化亚镍的性能与结构之间关系的研究

在Ｘ光衍射（ＸＲＤ）、扫描电镜（ＳＥＭ）、差热（ＤＴＡ）和热重（ＴＧＡ）等测试结果的基础上，对氢氧化亚镍（Ｎｉ（ＯＨ）２）的晶体结构与其性能参数之间的关系进行了研究。研究结果表明，Ｎｉ（ＯＨ）２颗粒的结晶度越高、颗粒的粒径分布越合理，产品的堆积密度越高；Ｎｉ（ＯＨ）２晶体的晶粒越小，产品的电化学活度越高。晶粒大小可以用产品的Ｘ光衍射图中特征峰的半峰宽这一参数来表征。当（００１）和（１０１）晶面的衍射峰半峰宽分别为０．７５°和０．８２°时，产品的活度物质利用率可达９９％，另外，Ｎｉ（ＯＨ）２的热分解温度越高，其活度则越低。     

醋酸乙烯酯与丙烯酸甲酯的种子乳液聚合

以过硫酸铵（ＡＰＳ）为引发剂,对丙烯酸甲酯（ＭＡ）的乳液聚合进行了研究,得出在ＭＡ／Ｈ２Ｏ重量比为０．５时,６０℃下合成粒径分布均匀的聚丙烯酸甲酯（ＰＭＡ）种子乳液的最佳配方为：十二烷基硫酸钠（ＳＤＳ）、（ＡＰＳ）和（ＮａＨＣＯ３）的浓度分别为１１．６、１．７２和４．６９ｍｍｏｌ／Ｌ．然后以ＰＭＡ乳液为种子,以油溶性偶氮二异丁腈（ＡＩＢＡ）为引发剂,分别进行不溶胀与溶胀条件下醋酸乙烯酯（ＶＡ）的种子乳液聚合,并以磷钨酸为染色剂,用透射电子显微镜（ＴＥＭ）对胶粒形态进行了表征     

小麦——冰草异源衍生系淀粉理化特性的研究

利用ＲＶＡ－３Ｄ（Ｎｅｗｐｏｒｔ Ｓｃｉｅｎｔｉｆｉｃ Ｐｅｙ．Ｌｔｄ．Ｎａｒｒａｂｅｅｎ,Ａｕｓｔｒａｌｉａ）、ＴＡ－ＸＴ２（Ｓｔａｂｌｅ Ｍｉｃｒｏ Ｓｙｓｔｅｍｓ,Ｇｏｄａｌｍｉｎｇ,Ｓｕｒｒｅｙ,Ｅｎｇｌａｎｄ）、ＤＳＣ２０（Ｍｅｔｔｌｅｒ Ｎａｅｎｉｋｏｎ－Ｕａｅｎｉｋｏｎ－ｕｓｔｅｒ,Ｓｗｉｔｚｅｒｌａｎｄ）等分析仪,对已被ＧＩＳＨ检测过的３５份小麦－冰草属间杂种衍生系及其亲本Ｆｕｋｕ     

多项式恒等式d_M~H(AX)=d_M~H(XA)成立的条件

讨论Ａ∈ＧＬ（ｎ,ｃ）时,　 Ｘ∈Ｍｎ（Ｃ）,多项式恒等式ｄ_Ｍ~Ｈ（ＡＸ）＝ｄ_Ｍ~Ｈ（ＸＡ）成立的充要条件,这里Ｈ是ｎ次对称群Ｓ 的子群,而ｄ_Ｍ~Ｈ表示由群Ｈ的酉表示Ｍ诱导的矩阵函数．     

衬底负偏压热灯丝CVD金刚石薄膜在锥体上核化的研究

以ＣＨ４和Ｈ２为反应混合气体,用衬底负偏压热灯丝ＣＶＤ法在Ｓｉ（１００）面上制备金刚石膜,使用扫描电子显微镜（ＳＥＭ）,Ｒａｍａｎ谱和Ｘ射线光电子能谱（ＸＰＳ）对在硅尖上的金刚石核化进行了研究,并着重讨论了沉积在硅尖上的金刚石颗粒的生长机理。     

自蔓延高温合成 MoSi_2/Mo_5Si_3 复合材料

用初始Ｍｏ粉和Ｓｉ粉通过自蔓延高温合成方法（ＳＨＳ）制取不同Ｍｏ５Ｓｉ３含量的ＭｏＳｉ２／Ｍｏ５Ｓｉ３复合材料．用Ｘ射线衍射仪、扫描电镜对产物进行组织结构分析．实验结果表明,在自蔓延高温合成中,ＭｏＳｉ２是一步生成,无中间相形成．随着样品中Ｓｉ含量的减少,产物中Ｍｏ５Ｓｉ３的含量增多,颗粒度变小     

两种新型水化磷酸盐的组成及结构

利用ＸＲＤ,固体核磁共振（ＮＭＲ）和扫描电镜－能谱分析（ＳＥＭ－ＥＤＳ）等测试技术对ＣａＯ－ＳｉＯ２－Ｐ２Ｏ５－Ｈ２Ｏ系统中ＣＢＣ材料水化过程进行了研究,发现有两种新型的水化磷酸盐;Ｃ７Ｐ３Ｈｘ和Ｃ６ＰＨｙ前是一种大片状的晶体,三强线为：０．２０９２（１００）,０．８２１６（５６）,０．３０９１（４１）;后呈连续的大小不等的圆形的小颗粒,是一种凝胶相,在两中,至少有一种以双聚体（Ｐ２Ｏ７）＾     

Markedness and its Interpretation in Language Use

Language markedness is a common phenomenon in languages, and is reflected from hearing, vision and sense, i.e. the variation in the three aspects such as phonology, morphology and semantics. This paper focuses on the interpretation of markedness in language use following the three perspectives, i.e. pragmatic interpretation, psychological interpretation and cognitive interpretation, with an aim to define the function of markedness.     

Features of Women's language

Language is a means of verbal communication. People use language to communicate with each other. In the society, no two speakers are exactly alike in the way of speaking. Some differences are due to age, gender, statue and personality. Above all, gender is one of the obvious reasons. The writer of this paper tries to describe the features of women＇s language from these perspectives： pronunciation, intonation, diction, subjects, grammar and discourse. From the discussion of the features of women＇s language, more attention should be paid to language use in social context. What＇s more, the linguistic phenomena in a speaking community can be understood more thoroughly.     

An Analysis of Catherine＇s Character——Wuthering Heights

Wuthering Heights, Emily Bronte＇s only novel, was published in December of 1847 under the pseudonym Ellis Bell. The book did not gain immediate success, but it is now thought one of the finest novels in the English language. Catherine is the key character of this masterpiece, because everybody and everything center on her though she had a short life. We can understand this masterpiece better if we know Catherine well.     

Lower Paleozoic oil relationships within Williston Basin, Canada

The Williston Basin is a significant petroleum province, containing oil production zones that include the Middle Cambrian to Lower Ordovician, Upper Ordovician, Middle Devonian, Upper Devonian and Mississippian and within the Jurassic and Cretaceous. The oils of the Williston Basin exhibit a wide range of geochemical characteristics defined as "oil families", although the geochemical signature of the Cambrian Deadwood Formation and Lower Ordovician Winnipeg reservoired oils does not match any "oil family". Despite their close stratigraphic proximity, it is evident that the oils of the Lower Palaeozoic within the Williston Basin are distinct. This suggests the presence of a new "oil family" within the Williston Basin. Diagnostic geochemical signatures occur in the gasoline range chromatograms, within saturate fraction gas chromatograms and biomarker fingerprints. However, some of the established criteria and cross-plots that are currently used to segregate oils into distinct genetic families within the basin do not always meet with success, particularly when applied to the Lower Palaeozoic oils of the Deadwood and Winnipeg Formation.     

低渗透非均质砂岩油藏启动压力梯度研究

理论推导与室内实验相结合,建立了低渗透非均质砂岩油藏启动压力梯度确定方法。首先借助油藏流场与电场相似的原理,推导了非均质砂岩油藏启动压力梯度计算公式。其次基于稳定流实验方法,建立了非均质砂岩油藏启动压力梯度测试方法。结果表明:低渗透非均质砂岩油藏的启动压力梯度确定遵循两个等效原则。平面非均质油藏的启动压力梯度等于各级渗透率段的启动压力梯度关于长度的加权平均;纵向非均质油藏的启动压力梯度等于各渗透率层的启动压力梯度关于渗透率与渗流面积乘积的加权平均。研究成果可用于有效指导低渗透非均质砂岩油藏的合理井距确定,促进该类油藏的高效开发。     

On Tragic Consciousness In The Works By Ernest Hemingway

As an American modern novelist who were famous in the literary world, Hemingway was not a person who always followed the trend but a sharp observer. At the same time, he was a tragedy maestro, he paid great attention on existence, fate and end-result. The dramatis personae's tragedy of his works was an extreme limit by all means tragedy on the meaning of fearless challenge that failed. The beauty of tragedy was not produced on the destruction of life, but now this kind of value was in the impact activity. They performed for the reader about the tragedy on challenging for the limit and the death.     

Achieving Unusual States of Matter Under High Pressure

正The periodicity of the elements and the non-reactivity of the inner-shell electrons are two related principles of chemistry,rooted in the atomic shell structure.Within compounds,Group I elements,for example,invariably assume the+1 oxidation state,and their chemical properties differ completely from those of the p-block elements.These general rules govern our understanding of chemical structures and reactions.Using first principles calcula-     

Exchange-Correlation and Electronic Excitation Energies from Pairing Matrix Fluctuations

We have developed an adiabatic connection to formulate the ground-state exchange-correlation energy in terms of pairing matrix linear fluctuations.This formulation of the exchange-correlation energy opens a new channel for density functional approximations based on the many-body perturbation theory.We illustrate the potential of such approaches with an approximation based on the particle-particle Random Phase Approximation(pp-RPA).This re-     

Density Functional Theory for the Response of Periodic Systems to Electric Fields Based on the Vector Potential Approach

正The electronic and nuclear(structural/vibrational)response of 1D-3D nanoscale systems to electric fields gives rise to a host of optical,mechanical,spectral,etc.properties that are of high theoretical and applied interest.Due to the computational difficulty of treating such large systems it is convenient to model them as infinite and periodic(at least,in first approximation).The fundamental theoretical/computational problem in doing so is that     

On the Thermodynamic Limit for Responses to Static Electromagnetic Fields

For molecular systems,the quantum-mechanical treatment of their responses to static electromagnetic fields usually employs a scalar-potential treatment of the electric field and a vector-potential treatment of the magnetic field.Although the potential for each field separately is associated with the choice of an(unphysical)origin,the precise choice of the origin for the electrostatic field has little consequences for the results.This is different for the